After perfecting your diet and maximizing exercise, getting the most out of your cycles and getting less sides is important. I've noticed that I get more effective results with less sides when I use different aas from different groups instead stacking them with the same groups like a 19nor with 19nor.
Combining tren+deca = more sides, more shutdown. 19nor with dht like masteron counteracts some of tren sides and makes it work better. For me test and anadrol worked better than test and dbol, better overall look. The families of aas are either test derived, dht derived, 19nor derived.

Test family
testosterone
dianabol
halotestin
turinabol
Eq
Bolasterone

19nor family
deca
npp
tren
ment
Cheque drops
methyltren

dht family
masteron
anadrol
winstrol
primobolan
anavar
proviron
1-test/dhb
Superdrol
m1t